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Title: Perspective: Emergent topologies in oxide superlattices

Abstract

The ability to synthesize high-quality, complex-oxide heterostructures has created a veritable playground in which to explore emergent phenomena and exotic phases which arise from the interplay of spin, charge, orbital, and lattice degrees of freedom. Of particular interest is the creation of artificial heterostructures and superlattices built from two or more materials. Through such approaches, it is possible to observe new phases and phenomena that are not present in the parent materials alone. This is especially true in ferroelectric materials where the appropriate choice of superlattice constituents can lead to structures with complex phase diagrams and rich physics. In this article, we review and explore future directions in such ferroic superlattices wherein recent studies have revealed complex emergent polarization topologies, novel states of matter, and intriguing properties that arise from our ability to manipulate materials with epitaxial strain, interfacial coupling and interactions, size effects, and more. We focus our attention on recent work in (PbTiO 3) n/(SrTiO 3) n superlattices wherein exotic polar-vortex structures have been observed. We review the history of these observations and highlights of recent studies and conclude with an overview and prospectus of how the field may evolve in the coming years.

Authors:
 [1];  [1]; ORCiD logo [2]; ORCiD logo [3];  [4];  [1];  [5]; ORCiD logo [6]
  1. Univ. of California, Berkeley, CA (United States). Dept. of Materials Science and Engineering
  2. Univ. of California, Berkeley, CA (United States). Dept. of Physics
  3. Univ. of California, Berkeley, CA (United States). Dept. of Materials Science and Engineering; Univ. of California, Berkeley, CA (United States). Dept. of Physics; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). National Center for Electron Microscopy, Molecular Foundry
  4. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Sciences Division
  5. Univ. of California, Berkeley, CA (United States). Dept. of Materials Science and Engineering; Univ. of California, Berkeley, CA (United States). Dept. of Physic; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Sciences Division
  6. Univ. of California, Berkeley, CA (United States). Dept. of Materials Science and Engineering; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Sciences Division
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1542321
Alternate Identifier(s):
OSTI ID: 1478684
Grant/Contract Number:  
AC02-05CH11231; AC02-05-CH11231: Materials Project program KC23MP; AC02-06CH11357; SC-0012375
Resource Type:
Accepted Manuscript
Journal Name:
APL Materials
Additional Journal Information:
Journal Volume: 6; Journal Issue: 10; Journal ID: ISSN 2166-532X
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English

Citation Formats

Das, Sujit, Ghosh, Anirban, McCarter, Margaret R., Hsu, Shang-Lin, Tang, Yun-Long, Damodaran, Anoop R., Ramesh, R., and Martin, Lane W. Perspective: Emergent topologies in oxide superlattices. United States: N. p., 2018. Web. doi:10.1063/1.5046100.
Das, Sujit, Ghosh, Anirban, McCarter, Margaret R., Hsu, Shang-Lin, Tang, Yun-Long, Damodaran, Anoop R., Ramesh, R., & Martin, Lane W. Perspective: Emergent topologies in oxide superlattices. United States. doi:10.1063/1.5046100.
Das, Sujit, Ghosh, Anirban, McCarter, Margaret R., Hsu, Shang-Lin, Tang, Yun-Long, Damodaran, Anoop R., Ramesh, R., and Martin, Lane W. Wed . "Perspective: Emergent topologies in oxide superlattices". United States. doi:10.1063/1.5046100. https://www.osti.gov/servlets/purl/1542321.
@article{osti_1542321,
title = {Perspective: Emergent topologies in oxide superlattices},
author = {Das, Sujit and Ghosh, Anirban and McCarter, Margaret R. and Hsu, Shang-Lin and Tang, Yun-Long and Damodaran, Anoop R. and Ramesh, R. and Martin, Lane W.},
abstractNote = {The ability to synthesize high-quality, complex-oxide heterostructures has created a veritable playground in which to explore emergent phenomena and exotic phases which arise from the interplay of spin, charge, orbital, and lattice degrees of freedom. Of particular interest is the creation of artificial heterostructures and superlattices built from two or more materials. Through such approaches, it is possible to observe new phases and phenomena that are not present in the parent materials alone. This is especially true in ferroelectric materials where the appropriate choice of superlattice constituents can lead to structures with complex phase diagrams and rich physics. In this article, we review and explore future directions in such ferroic superlattices wherein recent studies have revealed complex emergent polarization topologies, novel states of matter, and intriguing properties that arise from our ability to manipulate materials with epitaxial strain, interfacial coupling and interactions, size effects, and more. We focus our attention on recent work in (PbTiO3)n/(SrTiO3)n superlattices wherein exotic polar-vortex structures have been observed. We review the history of these observations and highlights of recent studies and conclude with an overview and prospectus of how the field may evolve in the coming years.},
doi = {10.1063/1.5046100},
journal = {APL Materials},
number = 10,
volume = 6,
place = {United States},
year = {2018},
month = {10}
}

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Works referenced in this record:

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